I wrote this up years ago, and have a side screen full of little fun console windows counting down to their jobs, with FG/BG colors set based on topic. Using your task scheduler would be better if you want it to be more reliable than entertaining however.

In scripts:

        sleepUntil(
            nextTimeOccurence({time=>'3:15', weekdays=>'MTWRF'}), 
            sub {printf"%s - Next telemetry pull in %s.\r", scalar loc
+altime, englishTime(shift)}
            );
        print "\n";
[download]

In tools.pm:

sub sleepUntil
{
    my $time = shift;
    my $sub = shift;
    my $snooze = shift // 2;
    
    while (time < $time)
    {
        $sub->($time - time) if ref $sub eq 'CODE';
        sleep $snooze;
    }
}

sub nextTimeOccurence
{
    my $settings = shift;
    my $wantedSeconds = 0;
    if ($settings->{time} =~ /([0-9]+):([0-9]{2})/i)
    {
        $wantedSeconds = ($1*60 + $2)*60;
    }
    my @skipWeekDays;
    if ($settings->{weekdays} =~ /[mtwrfau]/i)
    {
        @skipWeekDays = qw( u m t w r f a ); #Sunday is day 0 of the w
+eek for localtime
        for (0..$#skipWeekDays)
        {
            $skipWeekDays[$_] = 0 if $settings->{weekdays} =~ /$skipWe
+ekDays[$_]/i;
        }
    }

    my $now = time;
    my ($sec, $min, $hour, $wday) = (localtime($now))[0,1,2,6];
    my $todaysNow = ($hour*60+$min)*60+$sec;
    
    $sec += $min*60 + $hour *3600; #seconds elapsed today
    
    my $desiredTime = $now - $sec + $wantedSeconds; #today's time of d
+ay
    if ($todaysNow > $wantedSeconds) #next desired time will occur tom
+orrow.
    {
        $desiredTime += 24*60*60;
        $wday++;
        $wday %= 7;
    }
    while ($skipWeekDays[$wday])
    {
        $desiredTime += 24*60*60;
        $wday++;
        $wday %= 7;
    }
    
    return $desiredTime;  #Process over lunch hour or whatever
}


sub englishTime
{
    my $time = shift;
    return "$time second".($time==1?'':'s') if ($time < 90);
    $time = int($time/60);
    return "$time minute".($time==1?'':'s') if ($time < 90);
    $time = int($time/60);
    return "$time hour".($time==1?'':'s') if ($time < 36);
    $time = int($time/24);
    return "$time day".($time==1?'':'s');
}
[download]

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